Stop and brake for twine machines



1,633 477 June 1927' J. B. CRAWFORD STOP AND BRAKE FOR TWINS IIACHINESFiled Oct- 27. 1926 5 Sheets-Sheet 1 c]: lNVENTOR ATTOI'QNEY 1,6 ,4 JuneJ. B. CRAWFORD 77 STOP AND BRAKE FOR TWINE MACHINES Filed Oct. 27, 19265 Sheets-Sheet 2 Q J 15. Urawf'ord INVEN roR ATTORNEY v 9 June 21, 1927.I J. BPCRAWFORD 633 477 STOP AND BRAKE FOR TWINE MACHINES Filed Oct. 27,1926 5 Sheets-Sheet v3 ATTORNEY June 21, 1927. 1,633,47 7

.1. a. CRAWFORD STQP AND BRAKE FOR TWINE MACHINES Filed om. 27, 1926 v 5Sheets-Sheet 4 J B. firawford INVENTOR ATTORNEY 1 2 June 9 7 .1. B.CRAWFORD STOP AND BRAKEFOR TWINE ACHINES 5 sheds-shut 5 Filed 001:. 27,1926 Gran/ford IINVENTOR ATTORNEY Patented June 21, 1927.

NITE]; 5 s'rA'rias JAMES CRAWFQRD, OF BISMARCK, NORTH'DAKOTA.

STOP AND" BRAKE FOR TWINE MAGHINES;

- This invention relates-to improvements in spinners used in themanufacture ofbinder and- -other twine, the general object of theinvention being to providemeans for stop ping the machine when the twinebreaks, thus preventing the piling up of the fiber at the nipper so thatthe machinecan bequickly started up again after the attendanthas againconnected the; fiber with the spool. 7

1o Another object of the invention 18 to'provide a brake for the flierwhich is applied at the same time the machine is stopped through theshifting of the belt from the fast pulley to the loose pulley.

L5 7 A further object ofthe invention to provide friction means on apulley which is driven from the spool shaft so that when the spoolceases to rotate, the friction means will be returned to normal positionby a .J spring, this return movement of the friction means acting torelease a catch of a weighted member, the actuation of which by theweight will shift the belt to the loose and apply the brake. p 7

A further object of the invention is to-so arrange the friction meansthat it will act as a tension on the twine and thus keep the.

twine from ballooning.

This invention 'also consists in certain other features of constructionand in the combination and arrangementof the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims. e

In describing my inventionin, detail, reference will be had to theaccompanying drawings wherein like. characters denote like orcorrespondingparts throughout the sev- 4 eral views, and in which p VFigurel is an elevation of a spinning machine constructed in accordancewith this invention', parts being broken away. p

Figure 2 is an end. view of the machine.

Figure 3 is a section on line 3-3 of Figure 1. r I

Figure 4 is a section on line 4-4 of Figare 1. Figure 5 is a detailsectional view through W the sliding shaft and its associated parts.Figure 6- is an elevation of the friction band. p I V V Figure 7 is anedge view of Figure'6. The drawings show a double-spinning machine,butit will, of course, be understood pulley Application filed October27, 1926. Serial No. 144,591.

that the invention may be used on a single machine.

7 In these drawin s, 1 indicates a supporting frame in whic is journaledthe pulley Shafts 2, each of which is provided with a fast pulley 3 anda loose pulley 4, a belt 5 engaging one or the other pulley of each set,the belt passing over av second pulley (not shown) and WlllCll may bedriven in any (1esired. manner. Each shaft 2 is connected by the gears 6with a shaft 7 journaled in the frame and a shipper rod 8 is providedfor shifting each belt, the rods being slidably arranged at one end ofthe frame. Each rod is provided with a pair of fingers for engaging thebelt so that the belt will be shifted from the. loose pulley to the fastpulley and vice versa, when the rod is shifted. 'A rock shaft 9 isjournaled adjacent each side of the machine and each shaft is providedwith an arm 10 for engaging a pair-of pins 11 on each shipper rod andeach shaft'is also provided with weighted arms 12 which tends tohold theshaft 9 in a position which will cause its arm to actuatetheshipper rodto place the belt engaged by the said rod on the loose pulley of thedrive shaft."

Each shaft? is connected by the endless chain 13 with the flier 14, thechain passing over the sprockets 15 and 15, the latter sprocket beingarranged on the hollow shaft 16 of the flier while the sprocket 15 isarranged on the shaft 7. The shaft 16 is journaled in a part 1 of theframe and the hollow shaft 17 which is connected with the bobbinor'spool 18 by the catch 19, passes through the hollow shaft 16 and isslidably mounted on the stationary shaft 19' supported in the frame. Theshaft 17 is reciprocated in the usual manner from the shaft 20 havingthe'double spiral 21 thereon, through the sleeve 22 onv the said shaft20 and having a part engaging the spiral and having an arm 23 which isconnected with the hollow shaft 17 by its forked end engaging the groove24 inone end of the said shaft. The shaft 20 is rotated from the shaft 7through means of the shaft 25 and the gears 26.

It will thus be seen that when the parts are in operative position, theflier 14: will be rotated from the shaft 7 so as to spin the yarn ortwine and as the twine is connected with the bobbin or spool, thisrotary movement of the flier will be communicated to the spool andtherefore to the hollow shaft 17 and as the said shaft is being rotated,it will also be reciprocated through the double spiral on the shaft 20operating the collar 22 and arm 23 back and forth, as will beunderstood. This reciprocatory movement of the hollow shaft 17 willcause the twine to be evenly wound on the bobbin. It will, of course, beunderstood that the arrangement at the other side of the frame issimilar to' the just described arrangement and as this construction iswell known, it will not be described in detail.

In carrying out my invention, I place a pulley 27 on each hollow shaft,the pulley being connected to the shaft by a key 28 engaging akeyway 29inthe shaft so that the pulley can rotate with the shaft and the shaftcan slide through the pulley. The pulley'has its hollow shaft journaledin a part 1 of the frame. A brake band surrounds each pulley 27 and hasa suitable lining 31 thereon. A rod 32 passes through the bent ends ofeach band and is connected with the lower end by the nuts The rod alsopasses through a bracket 34: formmg part of the frame and carries acoiled spring 35 which presses the upper end of the hand against thebracket as its upper end engages a nut 36 on the upper end of the rod.

An l.'-shaped link 37 has an eye engaging the rod 32 to which it isconnected by one of the nuts 33 and this link engages a rod 38 which isconnected to the tail end of a trigger lever 39 which is designed toengage an arm 40 on one of the shafts 9 to hold the said shaft in aposition with its weighted arm in raised position and with the beltengaged by the shifter associated with the said shaft on the fastpulley. The other brake band 30 has a bracket 41 attached to about thecenter ofthe band and a rod 42 is connected with the bracket and to anequalizer lever 13 pivoted to the frame and which has its other endconnected by a rod 44 with a. trigger lever 39 which engages the arm 40of the second shaft 9. As long as each pulley is rotating, thisfrictional. engagement with the brake band will cause the brake band toturn until stopped by its engagement with a part of the bracket when theband will remain in this position so that the trigger 39 or 39 will beheld in operative position engaging the arm 40 or 10" so that each shaft9 will be held with its weighted arm in'raised position. As soon as thepulley stops, however, the spring 35 will return the brake band to itsnormal position, with its upper end resting upon the bracket 34, whichwill act to move the trigger to releasing position so that the arm 40will be free of the trigger and the weighted arm 12 can rock the shaft 9to cause it to shift the belt to the loose pulley and thus bring thedevice to rest. Thus if the twine should break, the bobbin or spool willcease to operate so that the friction pulley 27 would also cease tooperate and thus the device would be automatically stopped by theshifting of the belt from the fast pulley to the loose pulley. I a r Themovement of each shaft 9 also acts to throw on a brake .45. on eachflier 14: as the brake member is connected by a link 4:6 with a smallarm 17 oiieach shaft 9 in such a manner that as the shaft 9 is rotatedby the downward movement of its weighted arm,- the link 46 will bepushed forwardly so as to apply the brake 15. The brakeis guided in itsmovement by means of a bent rod 48 pivoted to a part of the frame andhaving its horizontal part passing through a depending part of the brake4:5,a' spring 19 on the said guide acting to apply the brake to a partof the flier. Y

By this invention, the apparatus will be automatically stopped and theflier braked as soon as the twine breaks through the stoppage of thebobbin and its frictionpulley so that the feeding of. the fiber ceasesand there is no danger of it piling u at the n'ipper which would causeconsiderab e labor and waste in the fiber in starting up the machineagain. This automatic stop and brake willcall the operators attention tothe fact that the machine'hasstopped and that the thread needsrepairing, as if the machine continued to operate. with the twinebroken, it might be some time before the operator would noticethat thetwine was broken. 1

The friction means also acts as a tension on the twine and keeps thetwine from ballooning between the flier buttons.

g It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

4 I desire it to be understood that I may make changes in theconstruction and in the V combination and arrangement of the severalparts, provided that such changes fall within the scope of the appendedclaims.

WVhat I claim is 1. In a' twine forming machine of the class described,a brake for the flier thereof, shipper means for the belt" thereof,means operable by the stoppage ofthe bobbin thereof for applying thebrake and'causing the shipper to shift the belt tothe loose pulley, saidmeans comprising a pulley on the bobbin shaft, a brake band engagingthepulley and adapted to be lifted by the rotary movement of the pulley,spring-means for resisting the lifting movement, a weighted shaft foroperating the brake and the shipper and means for holding the said shaftwith itsweight in raised position as long as the band is in raisedposition,

2. In a twine forming machine of the class described, a brake f\ rthe'fiier thereof, shipper means for the belt thereof, means operable bythe stoppage of the bobbin with its weight in raised position as long asthereof for applying the brake and causing the band is in raisedposition, such means the ship-per to shift the belt to the loosepulcomprising a trigger connected with the ley, said meanscomprisinga-pulley on the band and moved into holding position by 5 bobbin shaft,a brake band engaging the the upward movement of the said band and 15pulley and adapted to be lifted by the roan arm on the weighted shaftengaged by tary movement of the pulley, spring means the trigger. 1 i

for resisting the lifting movement, a weight In testimony whereof Iaflix my signature. ed shaft for operating the brake and the 10 shipper,means for holding the said shaft JAMES B. CRAWFORD.

